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How many 3-letter sequences can be formed if the second letter must be a vowel (A, E, I, O, or U), and the third letter must be a consonant?

 Oct 26, 2021
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The first letter has 26 possibilities. The second has 5, and the third has 21. 26*5*21 = 2730, so the answer is 2730

 Oct 26, 2021

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